Twisting machine



May 18,1926. f. E. F. BALDWIN TWISTING MACHINE Filed March 9. 1922 2Sheets-Sheetl l May 18 1926. 1,585,350

E. F. BALDWIN TWISTING MACHINE Filed March @-1.922 2 Sheets-Sheet 2Patented May 18, 1926.

t UNITED STATES PATENT OFFICE.

EARL F. BALDWIN, OF GARDNER, MASSACHUSETTS, ASSIGNOR T AMERICAN FIBRECORPORATION, OF GARDNER, yMASSACHUSIETTS,

SETTS.

A CORPORATION 0F MASSACHU- TWISTING MACHINE.

Application led March 9, 1922. Serial No. 542,219.

This invention relates to machines for twisting strips o'f paper intotwine or cord. In the machine of this invention, before the twistingoperation the paper is passed through a glue solution so that thefinished twine or lcord is firmly held in condition. It is .importantthat the glue be maintained fluid so that the machine may not becomeclogged thereby, and so that a supply of glue in proper heated conditionto be used may be insured at all times for each 0f the plurality oftwisting mechanisms usually grouped together in a single machine. Forthis purpose this invention provides a circulating system by which theglue is circulated from a supply tank to treating stations for theseveral paper strips, provision also being made for returning excessglue draining from the strip to the tank.

Means for maintaining the glue in proper heated condition as it iscirculated is also provided. j

For a inorecomplete understanding of this invention, together withfurther objects and advantageous details and combinations of parts,reference may be had to the accom panying drawings in which Figure l isa somewhat conventlonal front elevation of the machine showing `the gluecirculating system.

Figure 2 is a right end elevation also somewhat conventional.

Figure 3 is a detail section on line 3-.-3 of Figure 1.

Referring to these figures,v 1 indicates a machine frame havingupstanding therefrom a series of spaced vertical posts 2 joined at theirtops in pairs by means of cross members 8. These cross members extendlaterally beyond the posts 2 to furnish at opposite ends supportingbrackets for various instrumentalities. As shown each bracket portionhas an upstanding arm for supporting one of a pair of angle members 4eXtendlng lengthwise of the machine. These angle members at intervalssupport depending mandrel members 5 about which the paper strips arepassed and formed prior to the twisting operation. Positionedimmediately adjacent each row of these mandrels and supported in anysuitable manner is an ele.

vated open topped trough 6. As shown this trough is supported agamst thelower face of the bracket portions by means of saddle members 7 engagingtherebeneath and made fast to the upright osts 2. The ends of the trough6 are closed y members 8.

At l0 (see Figures 2 and 3) are shown a pair of shafts extendinglengthwise ofthe machine and supported by the frame members 3. `Clampedon one of these shafts adjacent each mandrel 5 journaled at its outerend a guide roll 12. This guide roll dips beneath the surface of glue inthe trough and furnishes a guide member for a strip of paper shown atwhich is led from a paper roll indicated at A. The strip of paper passesover the shaft 107 beneath the roller 12, and over a guide shaft 13positioned closely adjacent the mandrels 5. The paper passes down aboutthe mandrel, being partially wrapped therearound and is led therebythrough a ring member 14 within which the tapered lower end 15 of eachmandrel projects and from there is led to a die 16 in which the paper iscompressed together into strand formation. After passing through the dieeach strand passes within a twisting and winding mechanism, indicatedconventionally at 20 by which the strands are twisted and wound onspools shown at 21. The twisting mechanism has not been shown in detailas it forms no part of the present invention. j

Each die 1G is carried in a perforated boss extending upwardly from adownwardly and inwardly inclined drain board 26, this drain board havingouter and end walls 27 and being open at its inner side to dischargefrom its inclined top face'into a lower drain trough which is carried bythe upper portion of the frame 1. It is therefore apparent thatgluecarried over from the trough 6 by the strip of paper and passingtherewith down along the mandrel and to the ring 14 finds its way to thedrain board 26 and from there to the lower trough j In order that acontinuous circulation of glue may be effected to insure that glue inproper condition shall be presented at the paper treating stations andthat the glue draining from the paper may be prevented fro-in beingwasted, the upper and lower troughs are connected in series in thecirculating system. Adjacent one end of is an arm 11 having each uppertrough 6 is positioned a flow off pipe 31 which leads down t0 one of they 35 municates `/wlth branch pipes 61 leading to troughs 30. The glue issupplied to the upper trough 6 through a supply pipe 32 pos1 tionedadjacent the opposite end of the upper trough so that by supplying asuiicient flow of glue from this pipe the level of the glue in the uppertrough may be held at the point desired even though the pipe 81 iscapable of draining all the glue from the upper trough should the flowthereto be stopped.

At is shown a glue supply which is preferably in the form of a heatedglue pot or tank. Any means for heating this tank may be used, suchmeans as shown comprisf ing electric heating units 41. From the lowerportion of this supply tank extends a pipe 42 having a control valve 43therein, this pipe leadlng through an intermediate .pipe 44 to theintake of a pump 45. This pump discharges into an upwardly extendingpipe 46 which communicates through a T fitting 47 at its upper end withlaterally extending pipes 48 leading to the supply pipes 32 on oppositesides of the machine. The glue from the drain troughs 30 is lcd backtothe sup ly tank through pipes 50 positioned at t e opposite ends of thetroughs from the pipes 3l.

While the glue is heated in the tank 40, it is desirable to heat itduring its circulation. For this purpose steam heating pipes are hereinshown. The supply pipefor the steam is indicated at 60 which extendsadjacent the to of the machine where it comhorizontal pipes 62 extendinglengthwise within each trough 6. At the opposite end of the machinethese pipes 62 are passed through the ends 8 of the troughs and therecommunicate with downwardly extending pipes 63 leading to returnhorizontal pipes 64 positioned longitudinally within the troughs 30.After extending substantially the distance of these troughs the pipes 64communicate with a vertical pipe 65 leading back to the steam supply.

In this construction it is seen that the glue is circulated in Va heatedcondition to the various aper-treating stations and back to the supp ytank, while the glue draining from the paper Iafter it has been treatedalso finds its way back to the supply so that it has no opportunity tobecome hard or be wasted. The circulating system is alsoy designed sothat if the supply of glue is stopped, the glue in the machine drainsback to the supp y so that the machine may not become fouled when out ofoperation.

Having thus described an embodiment of this invention it should beevident that 'many changes and modifications might be made thereinwithout departing from Its spirit or scope as defined by the appendedclaims.

I claim:

l. In a paper twisting machine, a supply trough, a drain trough beneathsaid supply trough, a glue heater into which said drain troughdischarges, means for pumping heatT ed glue from said heater to saidsupply trough, means permitting flow from said supply trough to saiddrain trough, means for guiding strips 'of paper to be twisted beneaththe surface of glue in said supply trough, and means permitting glue todrain from the paper strips into said drain trough.

2. In a paper twisting machine, a supply trough, a drain trough beneathsaid supply trough, a glue heater into which said drain troughdischarges, means for pumping heated glue from said heater to saidsupply trough, means permitting flow from said supply trough to saiddrain trough, means for guiding strips of paper to be twisted beneaththe surface of glue in said supply trough, and means for heating theglue in said troughs.

3. In a paper strand-forming machine, twisting mechanism, means forsupplying a constant fiow of glue to a strip of paper advancing to saidmechanism, and means for conducting glue draining from the stripadjacent to said mechanism toy said supply means.

4.r In a paper strand-forming machine, twisting mechanism, means forsupplying a constant flow of glue to a strip of paper advancing to saidmechanism, means'ffor conducting glue draining frn'i the strip adjacentto said mechanism to said supply means, and means for heating said glue.

5. In a paper twisting machine, an elcvated open topped trough, a loweropen topped trough, means for delivering liquid to one end of said uppertrough, a Ypipe connection from the opposite end of said upper trough toone end 0f said lower trough, a pipe connection from said lower troughto said delivering means, and heating elements in said troughs.

6. In a paper twisting machine, an elevated open topped trough, a loweropen topped trough, means for delivering liquid to one end of said uppertrough, a pipe connection from the opposite end of said upper trough toone end of said lower trough, a pipe connection from said lower troughto said delivery means, heating elements in said troughs, and means forpassing strips of paper beneath the liquid in one of said' troughs.

7. In a paper twisting machine, an elcvated open topped trough, a loweropen topped trough, means for delivering liquid to one end of said uppertrough, a pipe connection from the opposite end of said upper trough toone end of said lower trough, a pipe connection from said lower troughto said deli/vering means, heating elements in said troughs, means forpassing strips of paper beneath the liquid in said elevated trough, andmeans for conducting liquid draining from said strips to said lowertrough.

8. In a paper twisting machine, an elevated trough, a mandrel extendingdownwardly adjacent one side of said trough, means to guide a paperstrip across the top of said trough beneath the level of liquid thereinand down about said mandrel, a die positioned below said mandrel andthrough which the paper passes from the lower en-d thereof, a drainboardhaving an opening to receive said die and having its top face inclineddownwardly therefrom, a lower open topped trough positioned to receiveliquid draining from said board, a liquid supply tank, means forsupplying liquid from said tank to saidelevated trough, and means forconducting liquid from said lower trough to said supply.

9. In a paper twisting machine, an elevated trou h, a mandrel extendingdownwardly adjacent one side of said trough means to guide a paper stripacross the top of said trough beneath the level of liquid therein anddown to said mandrel, a die positioned below said mandrel and throughwhich the paper passes from the lower end thereof, a drain board havingan opening to receive said die and having its top face inclineddownwardly therefrom, a lower open topped trough positioned to receiveliquid draining from said board, a heated liqui-d supply tank, means forsupplying liquid from said tank to said elevated trough, means forconducting liquid from said lower trough to said supply, and pipesextending through said troughs and through which a heating fluid may bepassed.

10. In a paper twisting machine, an elevated trough, a mandrel extendingdownwardly adjacent one side of said trough, means to guide a paperstrip across the top of said trough beneath the level of liquid thereinand down about said mandrel,l a die positioned below said mandrel andthrough which the paper passes from the lower end thereof, a drain boardhaving an opening to receive said die having itsl top face inclineddownwardly therefrom, a lower open topped trough positioned to receiveliquid draining from said board, a liquid supply tank, means forsupplying liquid from said tank to said elevated trough, means forconducting liquid from said lower trough to said supply, and means forconducting liquid from said elevatedto said lower trough.

11. In a paper twisting machine, an elevated trough, a mandrel extendingdownwardly adjacent one side of said trough, means to guide a paperstrip across the top of said trough beneath the level of liquid thereinand down about said mandrel, a die positioned below said mandrel andthrough which the paper passes from the lower end thereof, a drain boardhaving an opening to receive said die having its top face inclineddownwardly therefrom, a lower open topped trough positioned to receiveliquid draining from said board, a heated liquid supply tank, means forsupplying liquid from said tank to said elevated trough, means forconducting liquid from said lower trough to said supply, means forconducting liquid from said elevated to said lower trough and means forheating the liquid in said troughs.

In testimony whereof I have aiixed my signature.

` EARL F. BALDWIN.

